Which one of the following clerks could stock two consecutive aisles?

Faith-Kungu May 7, 2019

unable to see the video.

most of this question is a struggle to see when she writes all the way down because the play bar is in the way. please help fix that. i did not complain about most of the question because i was able to figure out the set up. im also having difficulties understanding why we would assume that L can only be in one or 9 and why are we using s/n statements in this?

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shunhe January 7, 2020

Hi @Faith-Kungu,

It's not that L can only be in one or 9, but rather that based on the second to last rule, we know that at least one L is in either 1 or 9. Hope this helps!